Lip turning machine



Ap 1 v c. cs; BROSTROM 2,076,698

' LIP TURNING MACHINE Filed Aug. 10, 1935 3 Sheets-Sheet l April 1937- c. e. BROSTROM 2,076,698

L-IP TURNING MACHINE I Filed Aug. 10,, 1935 3 Sheets -Sheet 2 A/ VE/V TUE.

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A ril 13, 1937. c. s. BRQSIROM ,5

LIP TURNING MACHINE 7 Filed Aug. 10, 1935 5 Sheets-Sheet I5 Patented Apr. 13, 1937 UNITED STATES LIP TURNING MACHINE Charles G. Brostrom, South Peabody, Mass, as-

signor to United Shoe Machinery Corporation, Paterson, N. J a corporation of New Jersey Application August 10, 1935, Serial No. 35,657

14 Claims.

This invention relates to lip turning machines and is herein illustrated and described as embodied in a machine for raising and setting the lip of an outsole which may be temporarily attached to a shoe.

It is an object of the invention to provide an improved machine of the type under consideration. In accordance with a feature of the invention a pair of members are provided which n are reciprocated alternately in substantially parallel paths, one of the members being constructed and arranged to raise a channel lip and the other to' turn back the lipafter ithas been raised.

In the illustrated construction, the two mem- 13 bers for operating upon the lip are arranged in side-by-side relation to each other for reciprocation transversely or widthwise of the channel. As illustrated herein, the member which operates to turn back and set the lip has an under surface which is adapted to ride over the raised lip. This lip-turning member is mounted for yielding movement upwardly from the channel and is urged downwardly by a spring to cause it to exert downward pressure upon the lip. The illustrated construction includes also a gage in the form of a blade-like member adapted to enter the channel, which gage is vibrated in a direction lengthwise of the channel to facilitate the feeding of the sole. As seen in 30 outline, the leading edge at the outer end of the illustrated gage is gently rounded, while the trailing edge recedes more abruptly to enable the gage to exert a pawl-like feeding action upon the sole. In the illustrated machine the tools 35 for raising and setting the lip are mounted, re-

spectively, upon bars which are connected by a system of levers to constrain the movements of the bars substantially to reciprocation in opposite directions and in parallel paths, means being provided for reciprocating one of thebars to operate the tool supported by that bar and to operate also, through the system of levers, the tool supported by the other bar. The invention further consists in features of construction and combinations and arrangements of parts hereinafter described and claimed.

The invention will be explained with reference to the accompanying drawings, in which Fig. 1 is a view in side elevation of the improved machine;

Fig. 2 is a plan view of the machine shown in Fig. 1;

Fig. 3 is a sectional view taken on the line III1II of -Fig. 2 looking in the direction of the 55 aI'I'OWS;

Fig. 4 is a perspective View of the members which operate upon the sole;

Figs. 5 and 6 are plan views showing the elements illustrated in Fig. 4 in different positions of operation upon a sole; 5

Fig. 7 is a sectional view taken on the line VIIVII of Fig. 2; a

Fig. 8 is a sectional view taken on the-line VIIIVIII of Fig. 6; I

Fig. 9 is a perspective View in inverted posi- 10 tion of one of the members shown in Fig. 4.

The operating members of the improved ma chine comprise a pair of tools 19 and I2 which, as shown in Figs. 4, 5, and 6, are arranged in side-by-side relation to each other. The tools. l0 and I2 are reciprocated alternately by the mechanism which will later be described. Figs. 5 and 6 show these tools in operation upon a sole S upon which is formed a channel lip L. The tool iii has an end portion l4 adapted to raise the lip L, the'end portion l4 being concave in a direction heightwise of the sole and convex in a direction lengthwise of the sole. The tool 12 has an under surface [6 which, as shown in Fig. l, inclines upwardly at an angle of about 8 toward the outer end of the tool. The inner or lower end of the inclined surface I6 is concave as shown in Fig. 8 to avoid creasing the lip L sharply at the shoulder. The tool l2 has an extension l8 which increases the bearing area of the under surface 16. A shallow groove [5 of rounded cross section extends across the surface IS in a direction which is lengthwise with respect to the lip L, the groove 15 constituting a local M increase in the concavity of the surface 16. Extending downwardly from the inner portion of the surface i6 is a rounded nose I! having an under bearing surface I9. Beneath the tools Ill and I2 is a thin blade-like gage 20 adapted to enter the channel and to engage the root of the channel lip L, otherwise known as the shoulder of the channel to position the sole in proper relation to the tools l0 and 12. As shown in Figs. 5 and 6, the gage 26, as seen in outline, has the outer end of its leading edge gently rounded, as indicated by the reference character 22 on Fig. 5, while the outer portion of its trailing edgerecedes more abruptly, as indicated by the reference character 24. The gage 20 is not stationary but, as will later be explained, oscillates in a manner to impart a feeding movement to the work. As the tools l0 and I2 are reciprocated the tool ID will first engage the channel lip to raise it in upstanding position; the too1'l6 will 1 l only in'Fi'g. 1).

into the housing 30 through a filler 34. Mount- 2, r t I r then advance into engagement with the raised lip and turn it back to set the lip.

The entire machine will now be described. The supporting structure of the machine compnses a frame 26 adapted to rest upon the floor and having a heightwise adjustable column 28 which carries a head 30. The head 30 is inthe form of. a housing adapted to contain a liquidlubricant and is provided with a cover plate 32 (shown Lubricant may be introduced ,ed upon a lower portion of the frame 26 is a motor 36 upon the shaft of which is mounted a 5 0 301 Mounted upon the shaft 42 by a ball bearing as shown in Fig.3 is an eccentric 48 from which extends an arm 50. The arm 50 is connected to a mechanism which will now be described for operating the-tools I0 and I2 and 25 the gage 20. 7

Secured within the housing 30 is anupstanding bearing pin 52 (Figs. 1, 2, and?) upon which is mounted a lever 54. The central portion of the lever 54 is provided with a downwardly ex- 30 tending boss 56 which rests up'on an upwardly extending, boss 58 formed on the bottom wall of the housing 30. The lever 54 hasan arm in the form of a pair of spaced cars 60 (Fig. 7) and .a similar arm extending in the'opposite di- 35 rection in theform of spaced ears 62. -The lever 54 is further provided with a third arm 64 (Fig. 2), extending centrally from the lever and at right angles to the arms above described. A second bearing pin 66 (Fig. 1) extendsupwa'rdly 40 within the housing 30and carries a lever68 which is similar in all respects to the above-described lever 54 except that in the lever the third arm 64 is omitted. A bar extending between the ears 60 ispivotally connected to the lever 45 54 by a. pin 12. The bar I0 extends through corresponding ears in the lever 68 and is pivotally connected to that lever by a pin I4. A bar I6 extends between the cars 62 of the lever 54 and is pivotally connected to that lever by'a pin I8. 50 The 'bar 16. extends between corresponding ears in the lever 68 and is pivotally connected to that lever bya pin 80; Asshown in Fig; 2, the bars I0 and, 16 are in substantially parallel relation to'each other, and the levers 54 and 68 are in substantially parallel relation to each other. By reason of this arrangement the bars I0 and I6 will be constrained to movement in parallel paths, and being pivotally connected on opposite sides of the fulcrums of the levers the bars 10 60 and 16 will beconstrained to move in opposite directions. The fulcrum bearings of the abovementioned levers are lubricated by a wick 82 which dips down intothe lubricant contained within the housing. Other wicks 84 (Figs. 1 and 65 .7) are provided for the pivotal connections of the bars to' the levers. 7 Ward extension 86 terminating in-a sleeve which surrounds'a pin '88 carried between a pair of iears 90 extending from. the arm 50. 'Oscillatory movement is transmitted'from the eccentric 48 through the arm 50 to the pin 88, and thence to theextension 86 of the bar I0 .and from the bar 10 through the levers 54 and 68.toithe bar 16.}:The bars I0 and I6 are 'thus' reciprocated alternately in opposite directions. The bar-s10 .tool I0.

The bar 10 has a reare.

and I6 extend outwardly through suitable openings in a felt partition 92 for preventing the escape' of splashed lubricant, and thence out through an opening in an extension 93 of the housing 30.

. The tool I0 is rigidly secured to the'outer end of the bar I0 by a pair'of screws 94. The tool I2 is pivotally mounted for heightwise movement "upon .a. pm 96 which is secured in the forked end of a block98, the rear portion of the block ,being rigidly secured by screws I I00 to the outer end of the bar I6.

A recess I 0| is formed in the adjacent face of the tool I0 to accommodate I02 which is secured by screws I04 to the block 98 bears against the upper surface of the tool -I2 to urgethe tool downwardly.

The reciprocatory movement of the bars I and I6 is thus transmitted to the tools I0 and I2. The tools I0 and I2 are positioned so as to the end of the pin 96 and a nut which secures be substantially insliding engagement with each other. Their reciprocatory movement, however, will have a transverse component owing to the fact that the bars 10 and I6 are mounted upon levers. This transverse component, although slig ht, is of'material assistance in the feed of the work, its effectiveness being due in part to the rapid speed at which the tools are driven. No special provision is necessary for the transverse component of the bar 10 in its connection to the arm 50, the transverse'componentbeing so slight as to betaken up between theterminal'sleeve on the extension 86 and the pin 88..

The gage 20 is mounted for horizontal pivotal movement upon a vertical pin I06 which is secured in a block I08 having provision for adjust! ment ina direction parallel to the path of reciprocation of the tools I0 and I2. the block I08 ls slidably mounted in II 0. A clamping screw I I2 is provided for se- To this end curing the block I08'in adjusted, position. The.

guideway H0 is secured by a clamping screw II4 to a vertical wall I I5 of the housing 30, a depending flange III ofthe guideway IIO being suitably guided for vertical adjustment relatively to the wall II5 and'having avertical slot to accommodate the screw H4. The heightwise'adjustment of the gage 20 should be such as to bring it'into sliding engagement with the under surface of the working end portion of the tool I0 which is extended downwardly, as indicated by the reference character II9, to N provide a bearing surface of limited area at the end portion of the 'The'gage20 functions also as a stop a guideway for the .tool I2 under the pressure of the spring I02, the bearing surface I9 being in sliding engagement with the gage20. .The gage 20 has a tall portion .IIBeXtending rearwardly of the pivot I 06. Pivotally mounted upon the tail 6 is, a block IIB which is received within a slot formed in the lever arm 64. It is apparent that the oscillatory movement of the lever 54 will be transmitted through the block II 8 to the gage In the operation of the machine a shoe, to hich istemporarily attached. a channeled sole S,is presented by hand to theloperatingtools.

Thelip L is turned over 'by-hand at a locality adjacent to one end of the. channel and the shoe 7 20, causing the gage 20 to oscillate or 'yibratep in the line of feed of the work.

as viewed in Fig. 8, against the gage 20, with the root of the lip L in contact with the end of the gage. As the tools 10 and I2 reciprocate alternately the tool ill and the nose l9 will deliver a series of rapid blows against the lip L. The tool II], as already described, will progressively raise the lip L to or slightly beyond upstanding position, while the under surface iii of the tool I2 will progressively ride over the turned-up lip and 10 turn back and set the lip. The sole S is provided with the usual channel groove G for receiving the stitches which unite the sole to the upper. When the channel lip L is turned back it tends to overhang the groove G, and would interfere with the subsequent stitching operation if set in this position. The purpose of the nose l9 on the underside of the tool I2 is to push the root of the partially turned lip clear of the groove G. It can best accomplish this purpose if permitted, on its outward stroke, to travel slightly beyond the end of the gage 20; and the gage 20 is accordingly adjusted, through the block I08 and clamping screw H2, in such relation to the stroke of the tool I2. This action of the nose I!) upon the lip L is illustrated in Fig. 8. The nose I9 is rounded to facilitate feeding the more sharply curved portions of the sole, as at the ball line and toe. The groove l5 accommodates the natural curvature of the turned-over lip,

and avoids deforming the lip by pressing it flat.

The gage 20 not only positions the sole in proper relation to the tools Ill and 12 but also, by reason of its oscillation, imparts a feeding movement to the shoe to feed the channel lip past the tools l0 and I2. This feeding movement results from the fact that the operator presses the shoe to the right, as. viewed in Fig. 8, with the shoulder of the channel in frictional engagement with the end of the gage 2B. The gage 20,

each time it advances in the direction of feed, thus carries the work along with it. During each back-feed movement of the gage 20, however, the tool I0 is exerting an outward thrust against the lip L which overcomes or relieves the pressure of the shoulder of the channel against the end of the gage 20, thereby minimizing any tendency of the gage to impart a back-feed movement to the Work. The blow of the nose l9 against the lip L does not occur until the feed stroke of the gage 20 has been substantially completed, and does not therefore interfere with the feeding action of the gage. The movement of the gage, which is rapid enough to amount to vibration, reduces the frictional resistance of the fiat under surface of the gage against the channel base. The shape of the gage, with the leading edge gently rounded at 22 and the trailing edge receding abruptly at 24, enables it to exert also a pawl-like feeding action upon the work.

0 Figs. 5 and 6 show the operating instrumentalities of the machine in opposite phases. In Fig. 5 the tool 18 is shown as fully retracted, the tool i2 as fully advanced, and the gage 20 as at the end of its feeding stroke. In Fig. 6 the tool it is shown 65 as fully advanced, the tool i2 as fully retracted,

and the gage 26 as at the beginning of its feeding stroke. A speed of 6100 revolutions per minute of the shaft 42 has been found most satisfactory.

70 As shown in Figs. 5 and 6, the lip L, while directly under the tool !2, is turned over almost 180 upon the surface of the sole. It is not always desirable to set the lip in this position and consequently, in the illustrated machine, the shape 75 and inclination of the under surface of the tool l 2 and also the pressure of the spring I02 are arranged to impart a set to the lip which will permit the lip to return to substantially upright position and remain in that position. The feeding action of the gage 2B is sufficient to advance the sole with little effort on the part of the operator, whose principal task is to hold the shoe with the sole in proper relation to the gage 20.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

l. A channel opening machine having a tool for raising a channel lip from a sole, means for reciprocating said tool, a tool for turning back the raised lip, and means for reciprocating the lip-turning tool in a path extending substantially widthwise of the channel.

2. A channel opening machine comprising a pair of reciprocatory tools constructed and arranged to raise a channel lip on a sole and to turn back the lip respectively, and means for reciproeating said tools alternately in substantially parallel paths.

3. A channel opening machine comprising a reciprocatory tool constructed and arranged to raise a channel lip formed on a sole, a reciprocatory tool arranged in side-by-side relation to the first-mentioned tool and having an undersurface adapted to ride over the raised lip to turn back and set the lip, and means for reciprocating said tools alternately in paths which are substantially Widthwise with respect to the channel.

4. A channel lip setting tool having a surface adapted to bear upon a channel lip to set the lip, said surface having a groove formed in it to accommodate the lip and thereby to avoid flattening the lip, and said tool having a nose extending beyond said under surface for pushing the base of the channel lip clear of the stitch-receiving groove of the sole upon which the lip has been formed. 7

5. A channel opening machine comprising a blade-like member adapted to enter a channel formed in a sole, means for vibrating said bladelike member lengthwise of the channel to facilitate feeding of the sole, and means acting progressively upon the flap of the channel as the sole is being fed to open the channel flap.

6. A channel opening machine comprising a blade-like gage adapted to enter a channel formed in a sole and to engage the base of the channel flap, means for vibrating said gage lengthwise of the channel to facilitate feeding of the sole, the leading edge of said gage being smoothly rounded and the trailing edge receding abruptly to enable said gage, as it is vibrated, to act as a pawl in feeding the sole, and means acting progressively upon the flap to open the flap as the sole is fed.

'7. A channel opening machine comprising a pair of reciprocatory members in side-by-side relation constructed and arranged to raise a channel lip on a sole and to turn back the lip respectively, a thin blade-like gage adapted to enter the channel of the sole, and means for vibrating said gage in a direction transverse to the direction of reciprocation of said tools to facilitate feeding of the sole.

8. A channel opening machine comprising a pair of tools constructed and arranged respectively to raise a channel lip on a sole and to set the lip, a pair of bars for supporting said tools respectively, connections between said bars con structed and arranged to constrain the movements of said bars substantially to reciprocation mam-- in opposite directions and in parallel paths, and means for reciprocating one of said bars to operate the toolsupported by that bar and to operate also, through said connections, the too supported by the other bar.

9.A channel'opening machine comprising a pair of tools constructed and arranged respectively to raise a channel lip on a sole and to set the lip, a pair of substantially parallel bars for '10. supporting said tools respectively, a pair of parallel levers each pivotally connected to both of said bars, a pivotal support for each of said levers, and means for reciprocating one of said bars to operate the tool supported by that bar and to operate also, through said levers, the tool supported by the other bar.

10. A channel opening machine comprising a pair oftools constructed and arranged respectively to raise a channel lip on a sole and to set the lip, a pair of substantially parallel bars for supporting said tools respectively, a thin bladelike gage adapted to enter the channel of the sole, asupport for said gage, a pair of parallel levers eachpivotally connected to both of said bars, a pivotal support for each of said levers,

means for reciprocating one of said bars to operate the tool supported by that bar and to operate also, through said levers, the tool supportedby the other bar, and a connection between one of said levers and said gage constructed and ar-' ranged to transmit oscillatory movement to said gage to facilitate feeding of the sole.

11, A channel opening machine comprising a pair of tools constructed and arranged respectively to raise a channel lip on a sole and to set the lip, a pair of substantially parallel bars for supporting said tools respectively, a pair of levers for supporting and guiding said bars, each of said i levers having one of its ends pivotally connected 40 to one of the bars and its other end pivotally connected to the other bar, a pivotal support for each.

of said levers, said pivotaltsupports being positioned between said bars and spaced from each other lengthwise of the bars, and means for oscil- 45 lating said bars and levers to cause said bars, by

reason of their connections to said levers, to reciprocate alternately with respect to each other.

' 12. In a machine 'of the class described, afeed member against which the work pieceis held by hand, means for oscillating said feed member, an operating tool constructed and arranged to deliver against the work piece a series of impulses directed away from said feed member, and means a for imparting such impulses to said'operating tool, said oscillating means and said impulseimparting means being synchronized to cause each impulse to be delivered against the'work means for imparting such impulses to said 1ip-- turning tool, said oscillating meansand said impulse-imparting means being synchronizedto cause each impulse to be delivered against the work piece during each back-feed movement of said gage, thereby minimizing any tendency of the gage to exert a back-feed action upon the sole. 1 7

14. A channel opening machine comprising a blade-like gage adapted to enter a channel" formed in the sole of a shoe and to position the sole by engagement with the shoulder of the a channel, meansrfor oscillating said gage in the line of feed; a tool-for raising the channel lip,

and means for reciprocating said lipraising tool in a path substantially transverse to thelin'e'of feed and parallel to said gage, said oscillating means and said reciprocating means being synchronized to cause said lip-raising tool to deliver each of its impulses against the lip during the back-feed stroke of said gage, thereby minimizing any tendency of the gage to exert'a back-feed action upon the sole.

G. BROS'I'ROM. 

